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Proceedings Article

LiteBIRD: a small satellite for the study of B-mode polarization and inflation from cosmic background radiation detection

[+] Author Affiliations
M. Hazumi, Y. Chinone, M. Hasegawa, K. Hattori, K. Ishidoshiro, N. Kimura, T. Matsumura, H. Morii, M. Nagai, R. Nagata, N. Sato, T. Suzuki, O. Tajima, T. Tomaru, M. Yoshida

High Energy Accelerator Research Organization (Japan)

J. Borrill

Lawrence Berkeley National Lab. (United States)

M. A. Dobbs

McGill Univ. (Canada)

H. Fuke, H. Matsuhara, K. Mitsuda, S. Sakai, K. Shinozaki, H. Sugita, Y. Takei, N. Yamasaki

Institute of Space and Aeronautical Science, Japan Aerospace Exploration Agency (Japan)

A. Ghribi, W. L. Holzapfel, A. T. Lee, H. Nishino, P. L. Richards, A. Suzuki

Univ. of California, Berkeley (United States)

M. Hattori

Tohoku Univ. (Japan)

Y. Inoue, A. Shimizu, H. Watanabe

The Graduate Univ. for Advanced Studies (Japan)

H. Ishino, A. Kibayashi, Y. Kibe, S. Mima

Okayama Univ. (Japan)

K. Karatsu, T. Noguchi, Y. Sekimoto, Y. Uzawa

National Astronomical Observatory of Japan (Japan)

N. Katayama

IPMU, The Univ. of Tokyo (Japan)

I. Kawano, A. Noda, Y. Sato

Aerospace Research and Development Directorate, Japan Aerospace Exploration Agency (Japan)

K. Koga, C. Otani

RIKEN (Japan)

E. Komatsu

The Univ. of Texas at Austin (United States)

S. Murayama, S. Nakamura, K. Natsume, Y. Takagi

Yokohama National Univ. (Japan)

I. Ohta

Kinki Univ. (Japan)

S. Takada

Univ. of Tsukuba (Japan)

T. Yoshida

ISAS, Institute of Space and Aeronautical Science, Japan Aerospace Exploration Agency (Japan)

K. Yotsumoto

ARD, Institute of Space and Aeronautical Science, Japan Aerospace Exploration Agency (Japan)

Proc. SPIE 8442, Space Telescopes and Instrumentation 2012: Optical, Infrared, and Millimeter Wave, 844219 (August 22, 2012); doi:10.1117/12.926743
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From Conference Volume 8442

  • Space Telescopes and Instrumentation 2012: Optical, Infrared, and Millimeter Wave
  • Mark C. Clampin; Giovanni G. Fazio; Howard A. MacEwen; Jacobus M. Oschmann
  • Amsterdam, Netherlands | July 01, 2012

abstract

LiteBIRD [Lite (Light) satellite for the studies of B-mode polarization and Inflation from cosmic background Radiation Detection] is a small satellite to map the polarization of the cosmic microwave background (CMB) radiation over the full sky at large angular scales with unprecedented precision. Cosmological inflation, which is the leading hypothesis to resolve the problems in the Big Bang theory, predicts that primordial gravitational waves were created during the inflationary era. Measurements of polarization of the CMB radiation are known as the best probe to detect the primordial gravitational waves. The LiteBIRD working group is authorized by the Japanese Steering Committee for Space Science (SCSS) and is supported by JAXA. It has more than 50 members from Japan, USA and Canada. The scientific objective of LiteBIRD is to test all the representative inflation models that satisfy single-field slow-roll conditions and lie in the large-field regime. To this end, the requirement on the precision of the tensor-to-scalar ratio, r, at LiteBIRD is equal to or less than 0.001. Our baseline design adopts an array of multi-chroic superconducting polarimeters that are read out with high multiplexing factors in the frequency domain for a compact focal plane. The required sensitivity of 1.8μKarcmin is achieved with 2000 TES bolometers at 100mK. The cryogenic system is based on the Stirling/JT technology developed for SPICA, and the continuous ADR system shares the design with future X-ray satellites. © (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation

M. Hazumi ; J. Borrill ; Y. Chinone ; M. A. Dobbs ; H. Fuke, et al.
" LiteBIRD: a small satellite for the study of B-mode polarization and inflation from cosmic background radiation detection ", Proc. SPIE 8442, Space Telescopes and Instrumentation 2012: Optical, Infrared, and Millimeter Wave, 844219 (August 22, 2012); doi:10.1117/12.926743; http://dx.doi.org/10.1117/12.926743


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